CygNet OPC HDA Server
OPC HDA (Historical Data Access) is used to exchange archived process data with OPC clients such as a trending or spreadsheet applications. The CygNet OPC HDA Server has been implemented based on this standard to expose CygNet SCADA historical data to standard OPC HDA client applications.
The CygNet OPC HDA Server can be used to exchange archived process data using the OPC HDA (OPC Historical Data Access) specification, versions 1.0, 1.1, and 1.2.
Note: For information on requesting real-time data, see the CygNet OPC Server. For information requesting data via the OPC UA standard, see the CygNet OPC UA Server.
The CygNet OPC HDA Server does not support browsing. The browser is an optional interface that was not implemented.
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